chore: add wechatMp config for MP OAuth

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/server/src/config/index.ts

@@ -28,6 +28,8 @@ export const config = {
   // JWT (for session tokens)
   jwtSecret: process.env.JWT_SECRET || 'dev-secret-change-in-production',
   jwtExpiresIn: process.env.JWT_EXPIRES_IN || '24h',
+  adminAccessCode: process.env.ADMIN_ACCESS_CODE || '',
+  adminTokenTtlSeconds: parseInt(process.env.ADMIN_TOKEN_TTL || '43200', 10), // 12 hours
 
   // Mobile client URL (for QR code generation)
   mobileClientUrl: process.env.MOBILE_CLIENT_URL || 'http://192.168.1.5:5174',
@@ -51,12 +53,18 @@ export const config = {
     intervalMs: 1000,
   },
 
-  // WeChat Open Platform
+  // WeChat Open Platform (PC扫码登录，暂不使用)
   wechat: {
     appId: process.env.WECHAT_APP_ID || '',
     appSecret: process.env.WECHAT_APP_SECRET || '',
     redirectUri: process.env.WECHAT_REDIRECT_URI || '',
   },
+
+  // WeChat MP (公众号网页授权)
+  wechatMp: {
+    appId: process.env.WECHAT_MP_APP_ID || '',
+    appSecret: process.env.WECHAT_MP_APP_SECRET || '',
+  },
 } as const;
 
 export type Config = typeof config;